linux-kernel - Re: [PATCH v4 1/2] ip_tunnel: fix ip tunnel lookup in collect

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Message-ID: <CAOrHB_CqcxxLxojk3Gy9JU=fQq5MFUOsSgy3+U941A0VONQzMA@mail.gmail.com>
Date:   Tue, 12 Sep 2017 16:41:50 -0700
From:   Pravin Shelar <pshelar@....org>
To:     Haishuang Yan <yanhaishuang@...s.chinamobile.com>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Alexey Kuznetsov <kuznet@....inr.ac.ru>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        Linux Kernel Network Developers <netdev@...r.kernel.org>,
        linux-kernel@...r.kernel.org, Pravin B Shelar <pshelar@...ira.com>
Subject: Re: [PATCH v4 1/2] ip_tunnel: fix ip tunnel lookup in collect_md mode

On Tue, Sep 12, 2017 at 2:47 AM, Haishuang Yan
<yanhaishuang@...s.chinamobile.com> wrote:
> In collect_md mode, if the tun dev is down, it still can call
> ip_tunnel_rcv to receive on packets, and the rx statistics increase
> improperly.
>
> When the md tunnel is down, it's not neccessary to increase RX drops
> for the tunnel device, packets would be recieved on fallback tunnel,
> and the RX drops on fallback device will be increased as expected.
>
> Fixes: 2e15ea390e6f ("ip_gre: Add support to collect tunnel metadata.")
> Cc: Pravin B Shelar <pshelar@...ira.com>
> Signed-off-by: Haishuang Yan <yanhaishuang@...s.chinamobile.com>
Acked-by: Pravin B Shelar <pshelar@....org>